nav.back-to-top-button{
  position:fixed;
  bottom: 10px;
  right: 10px;
  font-size:2em;

  border:1px solid #888888;
   padding:2pt;
   background-color: #ffffff;
   filter:alpha(opacity=85);
   -moz-opacity:0.85;
   -khtml-opacity: 0.85;
   opacity:0.85;

   text-shadow: 0 -1px 1px #FFF, -1px 0 1px #FFF, 1px 0 1px #aaa;
   -webkit-box-shadow: 1px 1px 2px #E7E7E7;
   -moz-box-shadow: 1px 1px 2px #E7E7E7;
   -webkit-border-radius: 3px;
   -moz-border-radius: 3px;

   text-align: center;
}


nav.back-to-top-button a{
  text-decoration: none;
}
